Abstract: An improved railway car wheelset having a novel wheel configuration that permits greatly improved performance on existing and improved track. This means that substantially higher rolling speeds can be achieved without loss of stability and while maintaining the ability of the wheelset to self center and self steer. The improved performance is enabled primarily by forming the track engaging surface of each wheel of the wheelset with an outward arcuate projection also referred to herein as the convex annular portion of the wheel. This wheel configuration operates to reduce the magnitude of the effects that occur when disturbances cause the wheelset to deviate from centered position on the track.